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Click on image for the lowdown. 
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| | | Forums66 Topics128,103 Posts1,056,188 Members48,436 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | The distributor was originally on a 12v vehicle (1962)?
112403 was the code for 1959 (and from 1955-2nd series, and most likely after 1959).
On your 1951 truck, you could be 6v or 12v (the distributor with points does not care). If your truck is 12v, you will need a ballast resistor and 12v coil, or a 12v coil with resistance built-in.
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